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| author |   Michael S. Tsirkin <mst@redhat.com> | 2015-12-27 15:04:42 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2016-01-12 20:46:55 +0200 |
| commit | eebd1b927822f13429ec09d0a48fe92716b22840 (patch) | |
| tree | e2a2454ce69bd21eb3077e73ad853f5548b68e4a /arch/ia64 | |
| parent | blackfin: define __smp_xxx (diff) | |
| download | linux-dev-eebd1b927822f13429ec09d0a48fe92716b22840.tar.xz linux-dev-eebd1b927822f13429ec09d0a48fe92716b22840.zip | |
ia64: define __smp_xxx
This defines __smp_xxx barriers for ia64,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
This reduces the amount of arch-specific boiler-plate code.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/include/asm/barrier.h | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/arch/ia64/include/asm/barrier.h b/arch/ia64/include/asm/barrier.h index 2f933480a764..588f1614cafc 100644 --- a/arch/ia64/include/asm/barrier.h +++ b/arch/ia64/include/asm/barrier.h @@ -42,28 +42,24 @@ #define dma_rmb() mb() #define dma_wmb() mb() -#ifdef CONFIG_SMP -# define smp_mb() mb() -#else -# define smp_mb() barrier() -#endif +# define __smp_mb() mb() -#define smp_mb__before_atomic() barrier() -#define smp_mb__after_atomic() barrier() +#define __smp_mb__before_atomic() barrier() +#define __smp_mb__after_atomic() barrier() /* * IA64 GCC turns volatile stores into st.rel and volatile loads into ld.acq no * need for asm trickery! */ -#define smp_store_release(p, v) \ +#define __smp_store_release(p, v) \ do { \ compiletime_assert_atomic_type(*p); \ barrier(); \ WRITE_ONCE(*p, v); \ } while (0) -#define smp_load_acquire(p) \ +#define __smp_load_acquire(p) \ ({ \ typeof(*p) ___p1 = READ_ONCE(*p); \ compiletime_assert_atomic_type(*p); \ |